You may consider adding a QR code to your design to link directly to additional online information.
Since a QR code can link to an online message, you can change the online message without the need to reprint the QR code on the ticket.
This can be a great way to provide more detail than you would want to cram onto your Event Ticket.
You may want to link to a band, promoter, or venue using the QR code.

If you have a website, consider placing the URL address on the ticket stub (since people generally hang onto ticket stubs).